I [Christopher Tolkien] have shown [on the map of Eriador] the little island of Himling off the far north-western coast, which appears on one of my father's sketch-maps and on my own first draft. Himling was the earlier form of Himring..., and though the fact is nowhere referred to it is clear that Himring's top rose above the waters that covered drowned Beleriand. Some way to the west of it was a larger island named Tol Fuin, which must be the highest part of Taur-nu-Fuin.